Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack

(often abbreviated as GMK) is a 2001 Japanese kaiju film directed and co-written by Shusuke Kaneko. The 26th film in the Godzilla franchise and the third of the Millennium era, it serves as a direct sequel to Godzilla (1954) and shares a standalone continuity with the 1998 American film, ignoring the events of every other installment in the series. Chiharu Niiyama stars as a reporter covering the story of Mothra, King Ghidorah, and Baragon defending Japan from Godzilla, an onryō creature possessed by the souls of those killed during the Pacific War. The supporting cast includes Ryudo Uzaki, Masahiro Kobayashi, Shiro Sano, and Hideyo Amamoto, with Mizuho Yoshida as Godzilla, Akira Ohashi as Ghidorah, and as Baragon.

Kaneko had pitched the idea of directing a Godzilla film to executive producer Shōgo Tomiyama as early as 1991. Following the success of his Gamera trilogy (1995–1999) and Pyrokinesis (2000), Toho approached him to direct the next Godzilla film while Godzilla vs. Megaguirus (2000) was still in production, granting him an unusual level of creative freedom over the story and direction. After initial concepts involving Kamacuras or a mutated astronaut were rejected, he settled on Godzilla battling three elemental guardians (originally Varan, Baragon, and Anguirus). Toho requested the more marketable Mothra and King Ghidorah, leading to the final lineup. Principal photography began in May 2001 and wrapped in August, on a budget of (). Kaneko had hoped to helm the special effects himself but was unable to due to scheduling constraints. Makoto Kamiya ultimately directed the special effects, which were shot simultaneously with principal photography using traditional tokusatsu techniques, including suitmation, miniatures, and pyrotechnics, and later also integrated with computer-generated imagery in post-production. Kow Otani composed the score, blending orchestral and electronic elements.

Godzilla, Mothra and King Ghidorah premiered at the Tokyo International Film Festival on November 3, 2001. Toho later released it throughout Japan on December 15. The film and its accompanying Hamtaro double feature, Hamtaro: Adventures in Ham-Ham Land, grossed (), tying as the third-highest-grossing Japanese film during 2002. Godzilla, Mothra and King Ghidorah also received generally positive reviews from critics, with many considering it among the best in the Godzilla franchise. It was ultimately the most critically and commercially successful film in the franchise's Millennium era.

The film was followed by Masaaki Tezuka's Godzilla Against Mechagodzilla, which is set in a different continuity, released on December 14, 2002.

Plot

<!-- Per MOS:FILMPLOT, summaries should be no more than 400-700 words. The current summary is 567-->

In 2002, during a Japan Self-Defense Forces (JSDF) briefing regarding the first Godzilla's attack and death, admiral Taizō Tachibana warns the military to remain prepared after a similar monster recently attacked New York City, with giant monster sightings rising worldwide. Tachibana is then alerted that an American nuclear submarine has gone missing off Guam. Search-and-rescue units find the submarine destroyed and capture footage of an undead Godzilla's dorsal plates moving nearby.

Meanwhile, Tachibana's daughter Yuri, a reporter working for the pseudo-documentary television company BS Digital Q, is filming with her crew at Mount Myōkō when an earthquake strikes. That night, another earthquake buries a group of bōsōzoku bikers who had vandalized a roadside shrine; the lone surviving trucker witnesses the subterranean monster called Baragon emerge. The next day, Yuri's colleague Mitsuaki Takeda supports her theory that a monster may have caused the mysterious earthquakes and gives her a book about Japan's legendary beasts called the Guardian Monsters.

At Lake Ikeda, another monster called Mothra, in her larval form, attacks a group of teenage vandals who disturbed her shrine and spins a cocoon. Yuri interviews Hirotoshi Isayama, a mysterious elder who authored the Guardian Monsters book, who warns that the beasts must be awakened before Godzilla destroys Japan. Yuri and her colleagues visit the Guardian Monsters' shrine, where she finds a stone before returning to continue interviewing Isayama. In the process, she discovers that the vengeful souls of soldiers and civilians who were killed during the Pacific War are embedded within Godzilla and are lashing out due to modern Japan's denial of its past crimes. Elsewhere, in Aokigahara, a suicidal man accidentally discovers a frozen 1,000-year-old ancient dragon called King Ghidorah.

Godzilla surfaces in Yaizu and battles Baragon in Hakone, killing the smaller guardian. Yuri is injured during the fray and goes on her own after Takeda refuses to take her to Godzilla's location. When the JSDF's jets fail to stop Godzilla's course toward Tokyo, Tachibana sets up a defensive line in Yokohama. As Mothra emerges from her cocoon in her imago form, Isayama awakens Ghidorah to combat Godzilla. However, Godzilla overpowers both guardians and attempts to attack the JSDF soldiers. Mothra sacrifices herself and transfers her spirit to Ghidorah. The empowered dragon injures and drags Godzilla underwater. Amidst this, Tachibana and his colleague Yutaka Hirose board miniature Satsuma submarines to launch D-03 missiles into Godzilla's wound.

As the battle continues, the Yokohama Bay Bridge collapses under Godzilla's atomic breath while Yuri and Takeda are reporting from it. A shrine stone falls from Takeda's pocket and revives the injured Ghidorah, who saves Yuri and Takeda from their fall, and they swim ashore while the monsters continue to fight. Godzilla defeats Ghidorah, but the combined spirits of the Guardian Monsters pull Godzilla deep beneath the sea. Tachibana enters the creature through its mouth and fires a final D-03 missile from the inside. Godzilla resurfaces and attempts to kill Yuri and Takeda with its atomic breath, but the ray erupts through the shoulder wound instead, building pressure within Godzilla. Tachibana escapes as Godzilla sinks and explodes.

As Japan rejoices in victory, Yuri's colleagues discover all traces of Isayama have vanished from their recordings, and that he vanished during the first Godzilla attack at the age of 75. Meanwhile, Yuri reunites with Tachibana, who salutes his colleagues and the Guardian Monsters. On the ocean floor, Godzilla's disembodied heart continues to beat.

Cast

The film also features Yukijiro Hotaru as a suicidal businessman who accidentally discovers Ghidorah; Nobuaki Kakuda as the commander of the Yokohama Garrison; as the director of BS Digital Q; Houka Kinoshita as the biker gang leader; as a village mayor; Takashi Sasano as the trembling truck driver; Yu Tokui as the director of the news helicopter; Kaoru Mizuki as the lady at the supermarket who does not believe Godzilla exists; and as a school teacher who witnesses the mushroom cloud caused by Godzilla's atomic breath. Dual roles include Katsuo Nakamura and Ryo Kase as Yaizu fishermen and Yoshimasa Kondo and as a couple at Ōwakudani.

Guest appearances include Koichi Yamadera as a television producer; Hinako Saeki as a woman on a ropeway; Takashi Matsuo as a police officer; Kenji Mizuhashi as a JSDF soldier; Jiro Sato as a JSDF officer; Tomoe Shinohara as an innkeeper; Yoichi Nukumizu as a man urinating at the inn; and as a chinatown resident. Director Shusuke Kaneko's wife, Nanako, also appears as an observer at the .

Cameos include Ai and Aki Maeda as twin sisters watching Mothra flying over Kagoshima (paying homage to the monster's twin priestesses); Godzilla 2000 (1999) star as a pilot; Kōichi Kawakita, the special effects director for the Heisei era's Godzilla films, and Godzilla vs Megaguirus (2000) director make uncredited cameos as a JASDF officer and a JSDF officer, respectively.

Production

<!--Further reading:

• https://web.archive.org/web/20010522053656/http://www.godzilla.co.jp:80/g2002/main.html

• https://web.archive.org/web/20010603141032/http://www.shusuke-kaneko.com/main/index.html

• https://web.archive.org/web/20010810004513/http://www.godzilla.co.jp/g2002/making/index.html

• https://web.archive.org/web/20011104071450/http://www.godzilla.co.jp:80/g2002/making/n_report7.html

• https://web.archive.org/web/20011107095438/http://www.godzilla.co.jp:80/g2002/making/n_report5.html

• https://web.archive.org/web/20011218035314/http://www.godzilla.co.jp/g2002/news/index3.html

• https://web.archive.org/web/20011220012222/http://www.godzilla.co.jp:80/g2002/tomi-pn/t5.html

• https://web.archive.org/web/20011230034442/http://www.shusuke-kaneko.com/StaffRoom/SR4.html

• https://web.archive.org/web/20020104122628/http://www.godzilla.co.jp:80/g2002/making/n_report9.html

• https://web.archive.org/web/20020107134144/http://www.godzilla.co.jp:80/g2002/news/index5.html

• https://web.archive.org/web/20020204012948/http://www.godzilla.co.jp/g2002/tomi-pn/index.html

• https://web.archive.org/web/20020204092846/http://www.godzilla.co.jp/gclub/t-news_post5.html

• https://web.archive.org/web/20020204223145/http://www.godzilla.co.jp/gclub/t-news_post2.html

• https://web.archive.org/web/20020204224201/http://www.godzilla.co.jp:80/g2002/making/n_report10.html

• https://web.archive.org/web/20020204224623/http://www.godzilla.co.jp/gclub/t-news_post4.html

• https://web.archive.org/web/20020204225321/http://www.godzilla.co.jp/gclub/t-news_post1.html

• https://web.archive.org/web/20020205033213/http://www.godzilla.co.jp:80/g2002/tomi-pn/t7.html

• https://web.archive.org/web/20020206183112/http://www.godzilla.co.jp:80/g2002/making/n_report8.html

• https://web.archive.org/web/20020206183631/http://www.godzilla.co.jp:80/g2002/tomi-pn/t6.html

• https://web.archive.org/web/20020213125023/http://www.godzilla.co.jp:80/g2002/tomi-pn/t4.html

• https://web.archive.org/web/20020215134016/http://www.godzilla.co.jp/g2002/making/n_report4.html

• https://web.archive.org/web/20020413204147/http://www.godzilla.co.jp:80/g2002/tomi-pn/index2.html

• https://web.archive.org/web/20020415231601/http://www.godzilla.co.jp:80/g2002/making/n_report6.html

• https://web.archive.org/web/20021015205949/http://www.shusuke-kaneko.com/eng/gmk03.html

• https://web.archive.org/web/20080708215735/http://www.shusuke-kaneko.com/eng/talk02.html

• https://web.archive.org/web/20010616104312fw_/http://www.godzilla.co.jp/g2002/making/index.html

• https://web.archive.org/web/20010619013656/http://www.shusuke-kaneko.com/q&a/index.html

• https://web.archive.org/web/20010714050655/http://www.cinescape.com/12/Editorial.asp?aff_id=12&this_cat=News&action=page&obj_id=26988

• https://web.archive.org/web/20010714061752/http://www.cinescape.com/godzilla/Editorial.asp?aff_id=12&this_cat=News&action=page&obj_id=27770

• https://web.archive.org/web/20010823113508fw_/http://www.shusuke-kaneko.com/StaffRoom/SR16.html

• https://web.archive.org/web/20010823113533fw_/http://www.shusuke-kaneko.com/StaffRoom/SR14.html

• https://web.archive.org/web/20011211130320/http://www.cinescape.com/12/editorial.asp?aff_id=12&this_cat=News&action=page&obj_id=30725

• https://web.archive.org/web/20060220024913/http://www.henshinonline.com/front_archive.html

• https://web.archive.org/web/20011124091300if_/http://www.cinescape.com/12/Editorial.asp?aff_id=12&this_cat=News&action=page&obj_id=30153

• https://web.archive.org/web/20011124063011if_/http://www.cinescape.com/12/Editorial.asp?aff_id=12&this_cat=News&action=page&obj_id=29963

• https://web.archive.org/web/20020202112440/http://www.asahi.com/culture/movie/K2001121001167.html

• https://miff.com.au/festival-archive/films/33101/godzilla-mothra-and-king-ghidorah-giant-monsters-all-out-attack

• https://web.archive.org/web/20010417103616/http://fandom.com/godzilla/editorial.asp?action=page&obj_id=265143

-->

Development

thumb|upright|[[Shusuke Kaneko, seen in 2023, directed and co-wrote the film]]

Emerging filmmaker Shusuke Kaneko had long desired to direct a Godzilla film. He first contacted Toho's Godzilla executive producer Shōgo Tomiyama in December 1991 with a New Year's postcard, shortly after Godzilla vs. King Ghidorah (1991) opened and Toho had announced plans for the next entry. However, Takao Okawara had already been selected, and the project became Godzilla vs. Mothra (1992). Kaneko continued approaching Tomiyama for subsequent films but was repeatedly too late, as another director was usually already attached. Tomiyama nevertheless kept him in mind.

Kaneko gradually gained Tomiyama's confidence through his critically acclaimed Gamera trilogy (1995–1999) and the film Pyrokinesis (2000). During the making of Godzilla 2000 (1999), Tomiyama decided to give Kaneko the third film in the new Millennium series. To test whether Kaneko could adapt to Toho's studio system, Tomiyama first assigned him Pyrokinesis without revealing the true motive.

During the wrap party for Pyrokinesis in April 2000, Kaneko was informed that Toho was considering him to direct the next Godzilla film. On June 14, a few days after Pyrokinesis opened, Tomiyama, producer , and other Toho executives formally offered Kaneko the job. At the time, the film was planned as the final entry in the Millennium era. After nearly a decade of persistence, Kaneko finally realized his ambition. Toho granted him an unusual degree of creative freedom for the franchise: rather than receiving a producer-driven concept, Kaneko developed the project from his own ideas and was allowed to select his key collaborators, including the screenwriter, cast, composer, and main crew.

Kaneko's Godzilla film was originally scheduled to be formally revealed on December 16, 2000—the release date of the second Millennium film, Godzilla vs. Megaguirus—but the announcement was cancelled at the last minute. Kaneko confidentially told reporter Norman England that Toho would proceed only if Megaguirus performed well at the box office. When the film underperformed, grossing against a budget, The official production announcement took place on March 6, 2001, at Toho's headquarters, where the title, story details, and a Godzilla maquette based on Kaneko's design were unveiled. Both Kaneko and Tomiyama attended the press conference.

Conception

While attempting to devise the film's story, Kaneko cycled through various concepts. At first, he suggested having pit Godzilla against Kamacuras, his son's favorite kaiju, but, according to Kaneko, this was scrapped because Kamacuras was considered "too obscure" and Godzilla had fought a similar insectoid kaiju in the previous entry.

Next, Kaneko proposed featured Godzilla confronting a new monster called "M", an astronaut mutated by cosmic rays. He compared the character to Jamila, a monster from Ultraman (TV 1966). The concept adopted a darker, more militaristic tone, replacing the Japan Self-Defense Forces with a force reflecting Japan's post-war history, and included a tragic ending in which Yumi sacrifices herself to revive her father, who had become the monster "M". Toho executives firmly rejected the idea, deeming its darker tone to be unsuitable for a New Year's holiday release. However, elements like the emphasis on a father-daughter dynamic were retained in the final story.

Kaneko then envisioned Godzilla battling three divine guardian monsters—initially Anguirus, Baragon, and Varan—receiving approval from Toho. However, during a meeting in late 2000, Toho chairman Isao Matsuoka instructed Kaneko to substitute Anguirus and Varan with the more marketable Mothra and King Ghidorah, describing the original trio as "on the small side." Toho's decision was influenced by market considerations, including recent research indicating that Mothra appealed strongly to female audiences while King Ghidorah drew male viewers. After silently considering the suggestion for 15 minutes in their office, Kaneko concluded that he could meet their requirements for this film despite his initial skepticism. He later explained that thinking of a recent reunion with former elementary school classmates, none of whom remembered Anguirus, Baragon, or Varan, had also reinforced his decision by showing how unfamiliar younger audiences had become with those kaiju. Baragon remained, but was excluded from the film's title. Despite the monster changes, the film's structure remained mostly consistent, with Baragon fighting first, followed by the others in a major battle in Yokohama.

Writing

Kaneko penned three drafts solo before enlisting tokusatsu (Japanese special effects) television series veteran Keiichi Hasegawa, for assistance on a fourth; Hasegawa joined in August 2000. Pyrokinesis co-writer Masahiro Yokotani was subsequently brought in, having had discussions with Kaneko about the project since May 21. The fifth screenplay was largely completed by January 2001. The screenwriters ultimately completed the film's script on April 20, 2001. Early on, the writers decided to give Godzilla the destructive antagonist role, attempting to replace the role King Ghidorah had played in its debut film Ghidorah, the Three-Headed Monster (1964). They gradually shifted the character's backstory by introducing a strong mystical element rooted in World War II, while still preserving his identity as a mutant dinosaur born from the atomic bomb.

Kaneko conceived the story as taking place in an alternate history where Japan, fully autonomous after World War II, signed a simple friendship treaty with the United States instead of the real-world Security Treaty. In-universe, the nation is called the Japanese Democratic Republic, with no restrictions on its Self-Defense Forces, allowing it to defend against threats such as Godzilla without foreign aid. Kaneko explained: "If Godzilla attacks, this fantasy setup enables the country to fight. But in reality, we would be dependent on America [for help]." Early into the writing, the real JSDF refused to cooperate with the production after Kaneko proposed a scene depicting a jet fighter crashing and causing civilian casualties—a stark contrast to his earlier Gamera films, where the military had provided full support.

Godzilla, Mothra and King Ghidorah takes place in a shared universe with the 1998 American Godzilla film while functioning as a standalone story with no direct plot connection to it. References to the 1998 film appeared in Kaneko's earliest drafts. In the film, after Tachibana gives a briefing that mentions a monster attacked New York recently, one officer notes that American experts identified it as Godzilla, while another expresses skepticism, stating that Japanese specialists do not believe the creature was the real Godzilla. According to Kaneko, he initially added the reference as a joke after learning of the American film's unpopularity. However, it ultimately also served a narrative purpose by reinforcing the idea that monsters exist worldwide and that countermeasures are necessary, thereby making the story's multiple kaiju appearances more plausible. In another account, he elaborated that the line was not purely comedic but was meant to suggest "a kind of a monster multiverse exists".

Early drafts included the submarine battleship Gotengo and large-scale Defense Force battles, but Tomiyama scaled these back to avoid overcrowding the narrative. Yokotani proposed entering Godzilla's mouth to defeat it, leading to the inclusion of the midget submarine Satsuma and D-03 propelled jackhammer. An early abandoned scene featured Godzilla destroying a bullet train emerging from a mountain tunnel, cut due to miniature and location constraints. Kaneko also envisioned a scene in which Godzilla would destroy the controversial Yasukuni Shrine. However, Toho rejected the idea, deeming it too inflammatory to include. Another draft featured a mahjong parlor sequence as a homage to Godzilla vs. Hedorah (1971).

Kaneko, who has had a lifelong attachment to Mothra since childhood, expressed regret over the character's explosive death and the omission of the Shobijin. However, he was pleased to include one scene paying homage to them. Toho requested removing the cruel dog torture scene at Lake Ikeda, in which the teenagers attempt to dump the dog in the middle of the lake right where Mothra is sleeping, but Kaneko insisted on keeping it as a warning against evil amid Japan's peace-loving self-image.

Pre-production

left|thumb|upright|[[Shinji Higuchi (pictured in 2016) provided uncredited storyboards for the special effects during pre-production.]]

Kaneko received significant creative control over Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack including choices for cast, crew, composer, and key team members. Anticipating his 2000 appointment by Toho, he had already discussed the project with suit creator . Kaneko assembled a team largely from his longtime collaborators on the Heisei Gamera trilogy and other films, preserving his signature style of tightly integrated live-action and effects work, while incorporating Toho's in-house contracted staff for certain roles.

Kaneko sought a redesign of Godzilla that avoided what he perceived as the "cute" elements in the suits created by for the two preceding Millennium films. Thus, Kaneko instead commissioned Shinada to construct the Godzilla suit, aiming for a more traditional and menacing appearance. Kaneko then asked Wakasa to create the Baragon suit. Feeling slighted by not being chosen for Godzilla, Wakasa reportedly refused to work on any monster suits for the film unless he could handle Godzilla, straining his professional relationship with Kaneko.

Due to tight scheduling constraints, Kaneko could not direct both the live-action and special effects (tokusatsu) sequences as initially planned. As a result, another director was brought in to handle the tokusatsu portions of the film. Rather than selecting an established special effects director, Kaneko chose the relatively unknown Makoto Kamiya for the role. Although Kamiya had not previously directed special effects for a kaiju film, he had extensive experience as an assistant special effects director, having worked on Kaneko's Heisei Gamera trilogy under Shinji Higuchi and on several Godzilla films under Kōichi Kawakita.

To compensate for not directing the special effects sequences himself, Kaneko drew thousands of detailed storyboards, which were printed as a supplement to the script. He emphasized drawing on his experience with the Gamera trilogy to ensure tight integration between the live-action and effects crews through precise communication and shared planning. The effects team, primarily staffed from the Heisei Gamera series and led by Kamiya, received uncredited storyboard support from Higuchi, along with contributions from Yuichi Kikuchi, Kenichi Eguchi, and Godzilla vs. Megaguirus director Masaaki Tezuka on SFX Team B.

Casting and characters

The film featured a mix of established Japanese actors and numerous cameo appearances. Chiharu Niiyama was cast in the leading role of investigative journalist Yuri Tachibana. Kaneko had followed Niiyama's career since her teenage years as a daytime drama star, noting her beauty and hoping to cast her at the ideal transitional moment from pop idol to serious actress. Her casting was announced on May 5, 2001, making her the youngest actress to headline a Godzilla film at the time.

Kaneko named Yuri after his own daughter, , as well as the character Yuriko Edogawa from the 1966 kaiju series Ultra Q. The fictional television network where Yuri works, BS Digital Q, was itself a direct homage to Ultra Q. Similarly, her colleague Jun Maruo (played by Takashi Nishina) was named after the character Jun Manjome from the same series.

Yuri was initially envisioned by Kaneko as being a scripter, timekeeper, or assistant producer at BS Digital Q, with the story showing her growth from a young behind-the-scenes employee to a confident adult who takes on reporting herself. After discussing the idea with the film's scripter, he learned that such specialized roles as a scripter would probably not exist at a small company like BS Digital Q. Kaneko therefore revised the character to be a reporter from the start, believing it would be simpler and easier for audiences to understand.

Kaneko sought to address sexism in the Japanese TV industry through Yuri's experiences as a female reporter and her interactions with her boss. Kaneko later realized that making Yuri a reporter had unintentionally created parallels with Audrey Timmonds (played by Maria Pitillo), the aspiring young female reporter from the 1998 American Godzilla film who struggles in her job partly because of her gender. He described the coincidence as "a little embarrassing." Early drafts also featured Yuri's boss, Haruki Kadokura, sexually harassing her, but this was removed in the third draft. According to Kaneko, Shiro Sano based the eccentric character on a director he knew personally. Sano's memorable hair-fidgeting gesture was his own spontaneous ad-lib.

For the role of Admiral Taizō Tachibana, Yuri's father, Kaneko cast musician and non-professional actor Ryudo Uzaki. He deliberately chose Uzaki, whose atypical appearance did not fit the perceived traditional image of a military officer. This was in order to prevent the character's climactic self-sacrificial actions from carrying unintended right-wing or militaristic connotations. Masahiro Kobayashi played the role of science writer Mitsuaki Takeda; he said his favorite scene was the one in which Takeda takes a drunken Yuri to her father's house, praising Uzaki's performance in it as well. Kobayashi's character was inspired by his uncle, an architect and passionate UFO researcher.

Veteran actor Hideyo Amamoto returned to the Godzilla series after 33 years to play the mysterious elder Hirotoshi Isayama. Kaneko had envisioned Amamoto for the part of Isayama from the earliest script stages and was thrilled to work with him. The part marked Amamoto's fourth appearance in the Godzilla film series, and ultimately one of his final screen appearances.

Kaho Minami, who played Colonel Kumi Emori, took inspiration from Lee Young-ae's character, Major Sophie E. Jean, in the 2000 film Joint Security Area. Minami noted that the costumes she received were instrumental in helping her achieve a similar look. Her future-husband, actor Ken Watanabe, later starred in Godzilla (2014); he expressed mock disappointment at being second in their household to be involved in a Godzilla production.

A distinctive aspect of the production was its extensive use of well-known actors and television personalities in brief, often single-scene roles or cameos. Notable examples include Masahiko Tsugawa as the Chief Cabinet Secretary, the sisters Ai and Aki Maeda (then represented by the same talent agency as Tsugawa), Takashi Sasano, Nobuaki Kakuda (cast as a unit commander after Toho production staff saw his enthusiastic discussion of Godzilla on the variety program Waratte Iitomo! during the "" segment), and Tomoe Shinohara (appearing as a guesthouse hostess at the invitation of co-star Uzaki, her then-bandmate in the musical group Shinoryu).

According to Tsugawa, to prepare for his role, he interviewed real former Chief Cabinet Secretaries to consult on the appropriate style and delivery for an emergency government press conference.

Filming

Principal photography for Godzilla, Mothra and King Ghidorah began on May 8, 2001, on location at Lake Ikeda near Kagoshima. These early scenes were for a composite shot of Mothra's cocoon floating on the lake, featuring about 20 local extras, and incorporated the regional folklore of the lake monster Issie reimagined as Mothra. Later that night, footage was shot in Tenmonkan, Kagoshima, to composite Mothra flying overhead. A small crew of nine members was present for the location work.

Main filming, referred to as the "crank in" in the Japanese film industry, officially commenced on May 11, 2001, in Studio 1 at Toho Studios.

Early location filming captured several atmospheric sequences away from the main studio. The scene showing Yuri and her companions conducting research at the base of Mount Myōkō was shot near Torisawa Station on May 26. A separate sequence depicting youths tormenting a dog along a lakeshore—originally planned for Lake Ikeda—was instead filmed at Lake Saiko on June 6. The dramatic "Ōtagiri Tunnel" scenes were shot at the real Aoyama Tunnel located in Sagamihara.

The minshuku guesthouse destruction sequence required careful coordination between the live-action and special effects units. Interior views through the windows were captured during principal photography on the main set and later composited with detailed miniature work. Only the window frame itself was physically constructed for the compositing process to ensure precise alignment. The full guesthouse set, erected on Stage 8 at Toho Studios, was lifted by a forklift equipped with springs beneath to simulate Godzilla's earth-shaking footsteps. When the set was dropped, ping-pong balls were placed on surfaces and bounced convincingly after being struck from below the floor with hammers by hidden crew members.

Several deliberate creative decisions paid tribute to the original 1954 Godzilla film during the guesthouse scenes. A photograph depicting the Odo Island research team from fifty years prior was produced using authentic still frames taken directly from the first movie. The harrowing sequence in which the minshuku innkeeper woman (played by Shinohara) is attacked by Godzilla, rescued, and then fatally attacked again mirrors the tragic fate of a fisherman on Odo Island in the 1954 film. During a critical rescue, a production oversight left the team without a prepared radiation protection suit, or NBC suit, for an actor to use in a scene in which the woman is rescued from the guesthouse. The crew quickly improvised, using whatever miscellaneous items they could find scattered around the studio to complete the shot. In another scene paying homage to the 1954 film, Taizō's flashback to witnessing Godzilla's 1954 attack recreates the original film's scenes directed by Ishirō Honda, with extras in period costumes fleeing a faithfully recreated set—including the outdoor environment, cart, and police uniforms—and a poster for Honda's Farewell Rabaul (1954) visible in the background. As a result, the production relocated those Chinatown scenes to the nearby Bell Road Tsurumi shopping district outside Tsurumi Station. The Honmachi Shopping Arcade at the exit of Keikyū Tsurumi Station in the same Tsurumi area was used for additional shots showing Yuri riding her bicycle through crowded streets. Filming also took place at the Yokohama Bay Bridge.

Live-action principal photography ended July 26, 2001, though pick-up shots took place at a later date. Special effects photography, on the other hand, wrapped a day behind schedule on August 9, which was considered the official completion of photography or "crank up".

Post-production

Post-production lasted three months and was led by , who also served as the visual effects supervisor with producing. To streamline reviews and reduce travel for the director and staff, Matsumoto introduced a "check room" system at Toho Studios, where representatives from all post-production companies gathered in one room to evaluate progress together. Instead of cutting the total number of composite shots, he emphasized quality improvements for each shot. As a result, by the film's premiere screening the number of unfinished composites had been reduced to single digits.

served as the film's editor. During production, his health was in decline as he underwent chemotherapy for cancer, which caused him to lose his hair. Tomita described his work on the film as the culmination of a lifelong dream; he had been a fan of Godzilla since childhood, and the franchise had inspired him to pursue a career in film editing. Kaneko, who had previously collaborated with him on Gamera 3: Revenge of Iris (1999) and Pyrokinesis, considered Tomita one of Japan's finest editors. Tomita was highly enthusiastic throughout the process, often vocalizing sound effects himself in the editing room.

The film's Yokohama sequence features Mothra flying toward the Yokohama Landmark Tower, where JSDF personnel watch from inside. Mothra veers upward, causing Godzilla's atomic breath—intended for her—to strike the tower instead, destroying its upper levels and killing the soldiers. The scene was filmed before the September 11 attacks, which occurred during post-production. Toho considered removing it over concerns that the imagery of a skyscraper being damaged might be seen as insensitive in light of the World Trade Center's destruction. Kamiya feared it would need to be cut, but the company ultimately decided to retain it in the final release. In response to the attacks, Kaneko worked to make the film's anti-war message even clearer.

Music

thumb|right|upright=0.8|[[Kow Otani (pictured in 2007) composed the film's score.]]

The film's score was composed by Kow Otani, a frequent collaborator of Kaneko. Otani deliberately avoided imitating Akira Ifukube's iconic Godzilla motifs or his own earlier work on the Heisei Gamera trilogy. Instead, he employed a modern sound featuring electronic instruments and techno elements, drawing inspiration from his score for the 2001 film ' and the Italian progressive rock band Goblin.

Otani composed the themes for Godzilla, Mothra, and King Ghidorah in the unified key of A minor to reflect their shared mythological essence, despite their opposing roles in the story. Godzilla's theme uses low brass and strings (including trombones and double basses) for a heavy, ominous quality and was intentionally kept simple and hummable. Mothra's theme features a female chorus, while King Ghidorah's uses a male chorus. Baragon was not given a distinct theme; a dedicated motif was instead written for the Tachibana father and daughter.

The score was recorded on October 7, 2001. The choral parts were performed by students from Toho Gakuen School of Music, recruited through Otani's daughter (a composition major at the school), whose youthful and unrefined voices Otani felt better suited the ancient, mythological tone. Mothra's theme incorporates pseudo-<nowiki/>lyrics inspired by the Japonic and Ainu languages created in part by reading portions of the script in reverse. The Japan Self-Defense Forces theme was adapted from three of Otani's draft Godzilla motif candidates with an added snare drum for a marching feel. The Tachibana family motif includes a subtle, uncredited homage to Ifukube's Godzilla theme.

The end credits feature Ifukube's original "Godzilla Theme" and "War of the Monsters March", the latter from the soundtrack of Invasion of Astro-Monster (1965). Kaneko stated that the decision to incorporate these classic pieces was made at the beginning of production.

Special and visual effects

Creature designs

Godzilla

Kaneko found it challenging to sketch Godzilla while preparing storyboards for the film. Set reporter and photographer Norman England described one of Kaneko's early storyboard drawings as resembling a "big, wet rat with jagged teeth." Kaneko provided suit maker Shinada with only general instructions, requesting a ferocious and frightening appearance that echoed the 1954 original and Mothra vs. Godzilla (1964), Shinada's favorite version of the character. Kaneko only saw drawings of the design by Shinada based on his instructions and did not view the final maquette until the press junket on March 6, 2001, having entrusted the suit maker entirely with interpreting his vision.

The primary suit was the largest (tallest and heaviest) ever created for a Godzilla film, with a total height of roughly 220 cm (2.2 meters) and a weight of over 70 kg..